


Vizio Y8389696D Main Board for V756x-J03. Known Compatible TV Models. If your TV has No Picture or No Video, this is likely caused by a bad T-con board, and NOT a bad main board. Symptoms commonly caused by a bad main board include. Oud noise, then TV shuts down. TV will not tune channels, n. O internet connection, i. Nternet apps open and TV locks up. Main Unit, Main Board, VGA Input, HDMI Input, A/V Board, Signal Board, Tuner Board, USB Input, Digital Audio Output, Ethernet Input. Tips to remember when ordering. When searching for the correct replacement part it is very important to find the part number on your original circuit board or part that needs to be replaced. Do not search by TV model number only as many TVs may use multiple variations of a circuit board or part in the same TV. We are a full-service TV Repair Shop, a reseller of business telephone equipment, and TV parts. We have been in business for over 30 years. We have a full-time electronics bench technician on staff making repairs at the component level and fully testing every part before it is resold. Don’t be alarmed if you receive a used or recycled box. We are environmentally friendly and reuse packing materials when possible as long as they are not damaged.